Radiator



Patented Au 14,1928.

PATENT OFFICE.

THOMAS E. MURRAY, JR., BROOKLYN, NEW YORK.

RADIATOR.

Application filed August 8, 1925. Serial No. 48,929

My invention aims to provide an improved design of radiators having ahigh etficiency in proportion to their size and having other advantagesreferred to in detail hereinafter.

6 The accompanying drawings-illustrate an embodiment of the invention.

Fig. 1 is a plan;

Fig. 2 is a side elevation;

, Fig. 3 is a horizontal section on the line In 3-3 of Fig. 4;

, it is a side'elevation of an alternative embodiment of the invention.

According to Figs. 1 and 2 the vessel for the heating water, steam orother fluid is 1 composed of parallel lengths 1 and 2 of pip- 1 ingconnected at one end by a bend 3 and provided with any usual or suitableaccessories for admitting and discharging the heating fluid.

0 A radiating structure is applied to the heating vessel by Welding,soldering or equivalent engagement and is made of a sheet metal plate orplates bent in such a Way as to be conducive to high efficiency. In plan(Fig. 1) the radiatin structure comprises plates 4 approximate ytransverse to the length of the vessel, the plates 4 being connectedalternately at their inner and outer edges by short longitudinal plates5 and 6.

80 The transverse plates 4 and connecting plates 5 and 6 may be formedby bending a single sheet to the required number of convolutions,

for each side of the radiator; or by using a number of separate plateseach comprising a 5 few-convolutions, and uniting said plates to eachother to make a radiating structure of the desired length, or they me.be formed in various other ways. The p ates in this way form verticallyextending fines for the passage of the air about the heating vessel 1.and in contact with the radiating structure. In elevation also theplates are bent as shown in Fig. 2, the upper half 7 extending obliquelyin one direction and the lower half 8 obliquely in the oppositedirection so as to form a zig-zag pat for the ascending columns of airin the flues. Thus the air will travel a longer distance in contact withthe radiating surfaces, will be forced to impinge against the sides ofthe fines in their upward movement, and will move more slowly thanthrough straight vertical flues; thus securing a greater heatingefliciency.

The metal can be stamped to the shape shown in Figs. 1 and 2 and tovarious other similar shapes or it may be made in sections like theparts 7 and 8; the upper edge of one oined to the lower edge of theother. The best material for this structure is copper or cuprous metalin various alloys, these metals being better adapted for radiatingpurposes than the more common iron and steel. Their increasedconductivity and malleability 7 make it possible to provide such aradiating structure of very thin copper sheets and to get the sameefficiency out of a structure so much smaller than an equally efiicientstructure of iron or steel as to counterbalance, at least in alarge'measure, the increased cost of copper. I i

'In Figs. 1 and 2, I have assumed the pipe 1, 2, 3 to be the ordinaryround pipe generally made of iron or steel, though it may also be ofcopper or cuprous metal. Where the latter is to be used for the heatingves sel, however, the vessel may be made of the more eflicient shapeshown in Figs. 3 and 4:. Here the vessel 9 is made of thin sheet metal,the vessel itself being high and narrow in cross-section so as to securemaximum contact with the heating fluid. It is enlarged and rounded toordinary tubular form at one end 10 for connection of an admission valveand at the opposite end 11 for connection to another section of theradiator.

Figs. 3 and 4 also show the use of a radiating structure consisting of aplurality of zig-za sections similar to those of Fig. 2 and in icated asa whole by the numerals 12, 13 and 14. These may be made separately andwelded together, the lower edge of one to the upper edge of the next, orsimilar multiple-zig-za shapes may be made of a sheet or sheets w ch arecontinuous from top to bottom. The vessel 9 is engaged by the radiatingstructure 12, and similar vessels 15 and 16 are engaged by thestructures 13 and 14. The ends of the several vessels are provided withbends and couplings to form a continuous passage for the heating medium.Or several such vessels may be connected in parallel, instead of inseries as shown; that is with an inlet pipe connecting with the one endof each vessel and an outlet pipe with the opposite end of each vessel.The radiator plates form lateral braces for the sides of the heatingvessels, and may be supplemented by auxiliary braces ofany sort,permitting the use of very thin flexible sheet metal.

The invention is well adapted to indirect and similar heating systems inwhich a forced draft is used. In that case a plurality of radiators likeFig. 2 or Fig. 4 may be arranged side by side or one above another andthe air forced through the zig-zag passages.

The radiator may be equally used for cooling air by circulating coldbrine or the like through the pipes so that the latter become a heatingelement only in the negative sense, that is, they extract heat from theradiating structure and induce a flow of the cool air downward throughthe fiues similar to the upward circulation of air induced by thepassage of steam through the ipes.

Various modifications of t e design and arrangement shown may be made bythose In witness whereof, I have hereunto signed 30 my name.

THOMAS E. MURRAY, J R.

